It adds pixels to reach the requested dimensions, but does not reconstruct missing detail. Faces, text and edges may look softer or more pixelated. This page has no AI enhancement mode.
Image Resizer
Resize one picture to the pixel width and height you need. Keep the original proportions or set both dimensions independently, then download a static PNG, JPG or WebP.
You may also need:Round Image Corners·Image Cropper·Compress Image·Image Rotator·Merge Images·Browse all tools
Choose dimensions without stretching the subject
The ratio lock is on initially. When the browser reads the image dimensions, changing one field calculates the other from the original proportions.
Ratio locked
Changing width recalculates height, and changing height recalculates width. Values are rounded to whole pixels.
Ratio unlocked
Both entered dimensions are used exactly. A different width-to-height ratio stretches or squeezes the picture; it does not crop it.
Target width and height
Both fields are required, with 1–8,192 px per side. Enlarging an image does not recover missing detail.
Pixel count change
The percentage compares width × height before and after resizing. It does not measure the downloaded file's KB or MB.
| Control or value | What it means |
|---|---|
| Ratio locked | Changing width recalculates height, and changing height recalculates width. Values are rounded to whole pixels. |
| Ratio unlocked | Both entered dimensions are used exactly. A different width-to-height ratio stretches or squeezes the picture; it does not crop it. |
| Target width and height | Both fields are required, with 1–8,192 px per side. Enlarging an image does not recover missing detail. |
| Pixel count change | The percentage compares width × height before and after resizing. It does not measure the downloaded file's KB or MB. |
For example, 1200×800 resized to 600×400 has 75% fewer pixels. If you turn the ratio lock back on after changing both fields, edit one dimension again to recalculate the other.
How to resize an image
1
Select one image
Choose a file up to 20 MB. The picker accepts JPG, PNG, WebP, GIF, AVIF, BMP and TIFF. Use a file your browser can preview so you can check the original dimensions and ratio.
2
Set width, height and format
Enter the required pixel dimensions. Keep the ratio linked for proportional resizing. Choose PNG, JPG or WebP; JPG and WebP also offer quality settings.
3
Resize and download
Click Resize Image to start server processing with the uploaded source. Download the finished result and check its dimensions, proportions and details.
Choose the format for the resized copy
PNG is selected by default. JPG and WebP offer these quality presets: “Strong compression”, “Moderate compression”, “Balanced”, “High quality”, “Highest quality”. The initial setting is “High quality”.
PNG
Can retain existing transparent areas. No quality selector is shown.
JPG
Transparent pixels are filled with white. “Highest quality” still uses lossy JPEG encoding.
WebP
Can retain existing transparency. This page uses lossy WebP, including at “Highest quality”.
| Format | Output behavior |
|---|---|
| PNG | Can retain existing transparent areas. No quality selector is shown. |
| JPG | Transparent pixels are filled with white. “Highest quality” still uses lossy JPEG encoding. |
| WebP | Can retain existing transparency. This page uses lossy WebP, including at “Highest quality”. |
Resizing and re-encoding can change details and colors. Original metadata is not retained. Keep the source file for later editing.
Match dimensions to the intended use
Check whether the receiving app asks for pixel dimensions, file size, or both.
A square upload such as 512×512
If the source is not square, use Image Cropper first to choose a square area, then resize it. Unlocking the ratio changes the subject's shape.
A file size limit such as 100 KB
This page has no target-KB field. After choosing suitable dimensions, you can try Image Compressor, then check the actual downloaded file size.
Selecting the image uploads it immediately. Dimension changes and repeated submissions reuse that source. Download completed results promptly.
Image resizing questions
The output is a static image made from the first frame. It does not preserve animation or resize every frame. Keep the original GIF if the motion matters.
The file picker lists formats, but your browser may not display TIFF or some AVIF files. Open the file in a compatible app and export PNG or JPG if you need a reliable preview and ratio calculation. HEIC is not listed here; use HEIC to PNG first.
This page processes one image per task. It has no batch upload, percentage input, print-DPI setting or social-platform preset buttons.
Set the dimensions your image needs
Choose one image, enter the pixel dimensions and download the resized copy.